gas-filled relay
gas-filled thyratron
gas-fire
gas-fired
gas-fitter
gas-fitting
gas-fixture
gas-furnace
gas-heater
gas-helmet
gas-holder
gas-indicator
gas-jar
gas-jet
gas laser
gas laser hologram
gas-lime
gas-lit
gas-main
gas-man
gas-mask
gas-meter
gas-mobile
gas-motor
gas-oil
gas-oven
gas-over
gas phototube
gas-pipe
gas-plasma display